CN1341982A

CN1341982A - Plug side-connector structure for high voltage cable

Info

Publication number: CN1341982A
Application number: CN01125835A
Authority: CN
Inventors: 内山健人; 今西久朗
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2000-09-04
Filing date: 2001-08-29
Publication date: 2002-03-27
Anticipated expiration: 2021-08-29
Also published as: JP2002075587A; EP1187272A3; US20020028593A1; CN1230947C; EP1187272A2

Abstract

In the plug-side connector structure for high-voltage terminal, the terminal tip (Pt) of a spark plug (P) can be inserted and fitted into a high-voltage terminal structure (1) very smoothly. The high-voltage terminal structure (1) comprises a plug-fit system (5), and the whole structure is contained in a boot (10). The plug-fit system (5) includes a tapered guide (8), which extends outwardly, while enlarging in the radial direction of the plug-fit system (5). The boot (10) includes a terminal enclosure (13) and a glass- or ceramic-portion enclosure (11), between which a circular recess (12) is provided. The high-voltage terminal structure (1) is thus held in the terminal enclosure (13) by fitting the tapered guide (8) into the circular recess (12).

Description

The plug side-connector structure of high-tension cable

Technical field

The present invention generally relates to the plug side-connector structure of high-tension cable.The latter is connected to ignition coil on the spark plug of the internal combustion engine that is used for vehicle such as automobile.

Background technology

Fig. 1 shows plug side-connector structure commonly known in the art.

In said structure, HV Terminal member 102 is installed in the end of high-tension cable 101.At the other end, spark plug P is provided with the most advanced and sophisticated Pt of terminal and glass or ceramic segment Pg (being referred to as " glass part " with term hereinafter).Most advanced and sophisticated Pt of the terminal of HV Terminal member 102 and spark plug and glass part Pg are contained in by in sleeve pipe of making as rubber or the guard shield 105.HV Terminal member 102 and peripheral device be electric insulation thus, and has prevented the glass part surface leakage of electric current along spark plug P.

When above-mentioned plug side-connector structure was installed, the HV Terminal member 102 of high-tension cable 101 at first inserted the sleeve pipe from an example of sleeve pipe (boot) 105.Then, most advanced and sophisticated Pt of the terminal of spark plug P and glass part Pg insert the sleeve pipe 105 from opposite side, thereby the most advanced and sophisticated Pt of terminal is equipped with in the HV Terminal member 102 in the sleeve pipe 105 into.

Yet, owing to sleeve pipe 105 is made by elastomeric material such as rubber, so it lacks rigidity.Particularly, when HV Terminal member 102 was placed in the sleeve pipe 105, its remaining part is the rigidity deficiency often.Therefore, when the most advanced and sophisticated Pt of the terminal of spark plug P and glass part Pg insert in the sleeve pipe 105, the latter is easily deformable, and most advanced and sophisticated Pt of terminal and glass part Pg can follow in the diagonal angle shift-in sleeve pipe 105 (Fig. 2), and the most advanced and sophisticated Pt of its upper terminal may be resisted against the edge of opening of HV Terminal member 102.Therefore, the cooperation of two adjoining edge becomes difficult.In addition, when the most advanced and sophisticated Pt of terminal inserted by force, HV Terminal member 102 self may be out of shape.

When the HV Terminal member of modification was reused, the most advanced and sophisticated Pt of HV Terminal member 102 and terminal was with concentrated wear, and conductivity between the two worsens.As a result, I. C. engine can not be lighted a fire or shut down.

Summary of the invention

Therefore, an object of the present invention is to provide a kind of plug side-connector structure, wherein the terminal tip of spark plug can be inserted smooth-goingly, and is connected in the HV Terminal member.

For this purpose, a kind of plug side-connector structure that is used for high-tension cable is provided, it comprises sleeve pipe, this sleeve pipe is the substantial cylindrical shape with first and second ends, and comprising the HV Terminal member that is connected on the high-tension cable end, this high-tension cable end stretches out by first end of sleeve pipe.Sleeve pipe also is suitable for receiving by its second termination terminal tip and subsequently the glass or the ceramic segment of spark plug, thereby the terminal tip can fit in the HV Terminal member.

Sleeve pipe comprises the terminal shell that is used to hold the HV Terminal member, and is suitable for holding glass or ceramic segment and is positioned at glass or ceramic segment shell near sleeve pipe second end.

The HV Terminal member comprises the cable-connector system that is connected to high-tension cable one end, and the equipped system of plug.

The equipped system of plug is included as cylindrical and is suitable for holding the ligand at terminal tip.

The equipped system of plug also comprises guider, and it is used for ligand is advanced in the most advanced and sophisticated guiding of terminal.

Preferably, guider comprises from ligand and extending towards sleeve pipe second end, forms the conical guide member of horn-like end simultaneously radially enlarging of ligand.

The outermost external diameter of the horn-like end of conical guide member is greater than the internal diameter of glass or ceramic segment shell.

In addition, glass part shell and terminal shell comprise inner ring surface respectively, are provided with annular groove between the two, thereby when the HV Terminal member was contained in the terminal shell, conical guide member fitted in the annular groove.

And preferably, the cylinder form of ligand has given external diameter, thus the outermost external diameter of conical guide member greater than ligand external diameter about 1.4 to about 1.6 times.

Usually, the cylinder form of ligand has the surface line (surface line) of longitudinal extension, and conical guide member has the outside cone angle of determining with respect to the longitudinal extension surface line of ligand, thereby the outside cone angle scope of conical guide member is between about 120 ° to about 150 °.

Perhaps, conical guide member can be made of a plurality of blades separate on the peripheral direction of conical guide member, and comprises the narrow horn-like end that is equal to the horn-like end with above-mentioned maximum outside diameter.

Above-mentioned guider comprises aptly extending towards second end of sleeve pipe from ligand and upwards enlarges in the footpath of ligand simultaneously and form the conical guide member of horn-like end.

Then, make peace the greatly internal diameter of glass or ceramic segment shell of the outermost external diameter of horn-like end equates, thereby, when the HV Terminal member is contained in the terminal shell, be connected to annular lip seals on the inner ring surface of glass or ceramic segment shell.

Guider comprises aptly also and the cylindrical guide of the concyclic axis of a cylinder of ligand that cylindrical guide assembles round ligand.

Then, cylindrical guide can extend along common cylinder axis from ligand, thereby be contained in glass or the ceramic segment shell, and can return, thereby when most advanced and sophisticated and glass or ceramic segment inserted in the sleeve pipe when terminal, cylindrical guide can be by in glass or the ceramic segment propelling sleeve pipe, and the terminal tip can be imported in the ligand, and the HV Terminal member is fixed in the terminal shell thus.

Description of drawings

Above and other objects of the present invention, feature and advantage will be more readily understood by the following description of the preferred embodiment that the reference accompanying drawing provides as the indefiniteness example, in the accompanying drawing:

Fig. 1 is the partial sectional view of the plug side-connector structure of HV Terminal commonly known in the art;

Fig. 2 is the partial sectional view of the plug side-connector structure of HV Terminal when being connected on the spark plug;

Fig. 3 is the cutaway view according to the plug side-connector structure of the HV Terminal of first embodiment of the invention;

Fig. 4 is the partial enlarged view that is used for the equipped system of plug in the plug side-connector structure of HV Terminal of Fig. 3;

Fig. 5 is the partial sectional view of plug side-connector structure when the equipped system of plug is connected with spark plug that is used for the HV Terminal of Fig. 3;

Fig. 6 is the cutaway view according to the plug side-connector structure of the HV Terminal of second embodiment of the invention;

Fig. 7 A is the partial enlarged view that the plug of the modification of first embodiment is equipped with system;

Fig. 7 B amplifies bottom view according to the part of the equipped system of plug of first embodiment variant of Fig. 7 A;

Fig. 8 is the cutaway view of plug side-connector structure of the HV Terminal of third embodiment of the invention;

The cutaway view of the equipped system of plug that Fig. 9 A is cylindrical guide when ligand stretches out;

Fig. 9 B is the cutaway view of the equipped system of the plug of cylindrical guide when returning to ligand;

Figure 10 is according to the plug side-connector structure of the HV Terminal of the 3rd embodiment partial sectional view when itself and spark plug are equipped.

The specific embodiment

In first embodiment shown in Figure 3, the plug side-connector structure of high-tension cable comprises: connect To the HV Terminal member 1 from the end of the high-tension cable K that draws such as ignition coil, and has bag Draw together the sleeve pipe 10 of the cylinder form of HV Terminal member 1. Knob shape terminal tip (terminal tip) Pt Stretch out from the spark plug P that is arranged on the internal combustion engine side. The most advanced and sophisticated Pt of this terminal with from its glass that extends out Glass or ceramic segment Pg (hereinafter being referred to as glass part) insert cover from the opposite flank of ignition coil together In the pipe 10, and be connected on the HV Terminal member 1 in sleeve pipe 10 inside.

HV Terminal member 1 is formed by the metal sheet Pressing Deformation. Cable-connector system 2 is connected to height The end of voltage cable K, and the equipped system 5 of plug is adapted to fit into the most advanced and sophisticated Pt of terminal of spark plug P. The equipped system 5 of cable-connector system 2 and plug has the roughly structure of inverted "L" shaped.

Cable-connector system 2 is configured to by clamping or crimping and the end of fastening high cable K. High This end of voltage cable K is initially peeled off crust and is exposed cable core. Exposed heart yearn is gone back to crust On the part of length. Follow whole cable end structure and clamped or crimping by cable-connector system, from And the heart yearn of high-tension cable K is connected on the HV Terminal member 1.

Shown in Fig. 3 and 4, the equipped system 5 of plug comprises tubulose ligand 6, and the most advanced and sophisticated Pt of terminal can Insert in the ligand 6, also comprise the taper guiding that is formed on ligand 6 opening parts (bottom among Fig. 3) Part 8.

Ligand 6 forms by making metal sheet be rolled into circle, and is roughly tubulose, the internal diameter of pipe Be arranged to and the most advanced and sophisticated Pt compression fit of terminal. Therefore, the most advanced and sophisticated Pt of terminal can pass through the most advanced and sophisticated Pt of terminal Advance in the ligand 6 by conical guide member 8 compression fit, and be electrically connected on the HV Terminal member 1.

In the present embodiment, ligand 6 swathes the roughly elastic ring 7 of C shape, and this prevents that ligand is swollen Swollen and make the connection between ligand 6 and the most advanced and sophisticated Pt of terminal more reliable.

Conical guide member 8 forms the extension of ligand 6, and towards its openend enlarge ( Downward among Fig. 3 and 4). The outer diameter A of the outermost end of conical guide member 8 is greater than glass part (or ceramic part Branch) diameter of shell 11 (hereinafter describing). When the most advanced and sophisticated Pt of terminal passes glass part shell 11, terminal Most advanced and sophisticated Pt is in the friction of inner conical face and importing ligand 6 of conical guide member 8.

Sleeve pipe 10 is made by elastic insulating material such as rubber. It forms the cylinder of inverted L-shaped.

Sleeve pipe 100 comprises from one of its end the glass part shell that (hereinafter being called second end) extends internally 11, glass part Pt passes wherein. It also comprises draws path (draw-out path) 14, and this draws the road The footpath is extended (as shown in Figure 3) from the point of elbow of L shaped sleeve pipe 10 towards its another (first) end approximate horizontal. Glass Glass part shell 11 and draw part between the path 14 and formed and be suitable for holding HV Terminal member 1 Terminal shell 13.

Glass part shell 11 has inner surface, and the shape of this inner surface manufactures with glass part Pg's The shape of outer surface is consistent, thereby the latter can be contained in wherein hermetically. By this way, prevented Electric current leaks along glass surface.

Terminal shell 13 has the inverted V-shaped hole, and this hole is corresponding to the shape of HV Terminal member 1. Terminal Shell 13 has the equipped system shell 13a of plug, and it is positioned at the ancon below and is suitable for holding the HV Terminal structure Ligand 6 in the equipped system 5 of the plug of part 1. Terminal accommodation hole 13 also comprises cable-connector system Shell 13b, it is from the ancon horizontal-extending and be suitable for holding the cable-connector system of HV Terminal member 1 2. Thereby, by with in the HV Terminal member 1 compression fit inlet side subshell 13 and it is arranged on cover In the pipe 10.

The internal diameter of plug cooperation shell 13a (as, 7.2mm) be substantially equal to or be slightly smaller than the equipped system of plug The external diameter of the ligand 6 of system 5. Therefore, advance plug when ligand 6 compacted cooperations and be equipped with system shell In the time of among the 13a, ligand 6 can remain on preposition. Yet, encircle 7 ligand 6 having assembled On the horizontal plane of part, considered and encircled 7 larger diameter, the internal diameter of the equipped system shell 13a of plug Be a bit larger tham remainder.

The inner surface of the sleeve pipe 10 between glass part shell 11 and terminal shell 13 is provided with ring Connected in star 12. The latter's aperture is greater than the outer diameter A of the outermost edge of conical guide member 8, thus high-pressure side The conical guide member 8 of sub-member 1 can be contained in the annular groove 12.

Draw path 14 and be formed on the extension of the cable-connector system shell 13b of terminal shell 13 In. The high-tension cable K that is connected on the cable connector 2 among the cable-connector system shell 13b is passable Extract out by drawing path 14.

When plug side-connector structure had been installed, HV Terminal member 1 at first was connected to high-tension cable K An end. Then, the other end of high-tension cable K is from the below of sleeve pipe 10 second end of sleeve pipe (that is, from) Insert in the sleeve pipe. It passes glass part shell 11 and terminal shell 13, and takes out from drawing path 14 Go out. By making sleeve pipe 10 strains, HV Terminal member 1 is pulled to the depths of sleeve pipe 10, and Conical guide member 8 is equipped with in annular groove 12, thus, HV Terminal member 1 snugly be equipped with into In the terminal shell 13.

The plug side-connector structure that is used for then high-tension cable K is connected to spark plug P, and is as described below.

Be installed in the most advanced and sophisticated Pt of terminal of the spark plug P in the I. C. engine and glass part Pg from sleeve pipe Second end insert in the sleeve pipe 10. Then, the most advanced and sophisticated Pt of terminal passes glass shell 11 and is equipped with into slotting In the equipped system 5, and glass part Pg is equipped with in glass part shell 11. In this process, Sleeve pipe 10 can have sizable distortion, and the most advanced and sophisticated Pt of terminal can be with respect to HV Terminal member 1 And be offset or on the skew insert in the equipped system 5 of plug. Then, the most advanced and sophisticated Pt of terminal adjoins the taper guiding On the inner surface of part 8 and in the importing ligand 6, in addition, the most advanced and sophisticated Pt of terminal and HV Terminal have been prevented The opening edge of the equipped system 5 of the plug of member 1 hooks, and the most advanced and sophisticated Pt of terminal and the equipped system 5 of plug Can smoothly be assembled together by the utmost point.

In above-mentioned first embodiment, the conical guide member 8 of HV Terminal member 1 is assembled to and is formed on glass In the locational annular groove 12 between glass part shell 11 and the terminal shell 13. In this structure, The outer diameter A of the outermost edge of conical guide member 8 is roughly greater than the aperture B of glass part shell 11. As The above, the most advanced and sophisticated Pt of terminal just can smoothly import in the ligand 6 by the utmost point.

In general, to set for be that the external diameter C of ligand 6 is preferred to the outer diameter A of the outermost of guide 8 1.4 to about 1.6 times value. Equally, the outside cone angle θ of conical guide member 8 sets for and is suitable for the terminal point The value in the assembly is advanced in the end guiding, preferably between about 120 ° and about 150 °.

When outer diameter A is inserted less than the most advanced and sophisticated Pt of the external diameter C of ligand 6 about 1.4 times and terminal diagonal angle The time, the latter can not be imported in the ligand effectively.

On the contrary, when outer diameter A during greater than about 1.6 times of the external diameter C of ligand 6, HV Terminal member 1 Be installed into not too easily in the sleeve pipe 100.

When outside cone angle θ inserted less than the most advanced and sophisticated Pt of about 120 ° and terminal diagonal angle, the latter can not be by effectively Ground imports in the ligand 6.

On the contrary, when outside taper angle theta during greater than about 150 °, conical guide member 8 must as the function of outer diameter A Must lengthen. As a result, sleeve pipe 10 also must lengthen, thereby has reduced its rigidity.

The second embodiment of the present invention is described now, wherein identical among structure member and first embodiment Represent with same Reference numeral. Only specifically describe the difference with first embodiment.

In a second embodiment, there is not annular groove between glass part shell 11 and the terminal shell 13 12. The substitute is sleeve pipe 10B as shown in Figure 6, glass part shell 11B and terminal shell Equipped system shell 13Ba is directly connected to each other for the plug of 13B.

In addition, the equipped 5B of system of the plug of HV Terminal member 1B comprises conical guide member 8B. It The internal diameter of outer peripheral external diameter and glass part shell 11B about equally.

In addition, HV Terminal member 1B is fixed by terminal shell 13B, and conical guide member 8B The annular flange flange of outside and the inner surface close contact of glass part shell 11B.

In the plug side-connector structure of the second above-mentioned embodiment, ligand 6 comprises conical guide member 8B is identical with situation among first embodiment. Thereby the most advanced and sophisticated Pt of terminal can be with first embodiment's The same plug that smoothly imports HV Terminal member 1 of situation is equipped with in the system 5.

Particularly, along with the annular flange flange of the outermost edge of conical guide member 8B firmly with glass part The interior ring surface contact of shell 11B, the interior ring surface of conical guide member 8B extends from the latter continuously Come. Therefore, when the equipped 5B of system of plug inserted among the glass part shell 11B, it was by directly reliable Ground is introduced among the conical guide member 8B, and enters then in the ligand 6. The most advanced and sophisticated Pt of terminal thus reliably Imported by conical guide member 8B in the equipped system 5 of plug of HV Terminal member 1.

First and second embodiment can comprise the embodiment of variation as described below.

General, conical guide member 8 and 8B prepare by the end of extension sheet material. Yet, this mistake A little less than Cheng Keneng makes too thin and its mechanical strength of the sheet material that is extended too. In addition, the extension operation also is quite to be stranded Difficult operation.

Fig. 7 A and 7B show the possibility for this problem. In these accompanying drawings, the taper guiding Part 8C by a plurality of horn-like (as, petal) blade 8Ca consists of, its from the end of ligand 6 towards it Openend extends, and outwards expands diametrically simultaneously.

This conical guide member 8C can be in that sheet material is rolled into circle before or after becoming ligand 6 Preparation. Particularly, the end of sheet material is cut open and is outwardly-bent, as forming the petal-shaped blade. This system Making method is simple and produced the element of uniform thickness.

Now will be described below the third embodiment of the present invention.

The plug side-connector structure of the 3rd embodiment is shown among Fig. 8, wherein provides from such as ignition coil The high-tension cable K that extends, be connected to the HV Terminal member 21 of the end of high-tension cable K, and have The substantial cylindrical shape also contains the sleeve pipe 30 of HV Terminal member 21.

HV Terminal member 21 is by to metal sheet (or plate) punching press be bent to form. These structure 21 bags Draw together the cable-connector system 22 on the end that is fixed on high-tension cable K, and be suitable for being connected to spark The equipped system 25 of plug on the most advanced and sophisticated Pt of the terminal of plug P, the equipped system of cable-connector system 22 and plug System 25 is configured to inverted L-shaped.

As among first embodiment to the description of cable-connector system 2, cable-connector system 22 is fixing To the end of high-tension cable K.

Shown in Fig. 8,9A and 9B, the equipped system 25 of plug comprises ligand 26, the most advanced and sophisticated Pt of terminal Can insert in this ligand, also comprise the cylindrical guide 28 of fixing around ligand 26.

Ligand 26 forms by steel plate is surrounded into substantial cylindrical. When compressing, the most advanced and sophisticated Pt of terminal joins When putting in the ligand 26, the former is electrically connected on the HV Terminal member 21. Closing on ligand 26 The given position of bottom on be provided with C shape elastic ring 27. This ring is solid from the outside round ligand 26 Fixed, and prevent that ligand 26 from expanding. It has also guaranteed contacting of ligand 26 and the most advanced and sophisticated Pt of terminal.

Cylindrical guide 28 is also by forming roll of steel plate is circular. It is solid round ligand 26 Fixed, thus can be along its cylinder axis with respect to ligand 26 forward and backward movements.

Particularly, the lower part 28b of cylindrical guide 28 along its length internal diameter greater than round cooperation The external diameter of the ring 27 that body 26 is fixing, and the internal diameter of its top 28a is greater than the external diameter of ligand 26, and And the external diameter less than ring 27. Cylindrical guide 28 is thus round ligand 26 installations and to moving down Moving, contact with ring 27 until have the top 28a of small diameter. Lower part is free to, Lower slider, thus its bottom edge 28b further from the bottom edge of ligand 26 to downward-extension (such as figure 8 and 9A shown in " extended position "), perhaps two bottom edge arrive on the same level face (such as Fig. 9 B With " retracted position " shown in 10).

When spark plug P inserted in the sleeve pipe 30, the most advanced and sophisticated Pt of its terminal was equipped with into cylindrical guide 28 In, its glass part Pg begins to contact with the bottom edge 28b of cylindrical guide 28. Cylindrical leading Manufacture maximum outside diameter greater than the most advanced and sophisticated Pt of terminal to the internal diameter of part 28, but less than glass part Pg's External diameter. Cylindrical guide 28 is at first to downward-extension (Fig. 9 A). The most advanced and sophisticated Pt of terminal is from cylindrical guide Guide is put in 28 below, and glass part Pg begins the bottom edge with cylindrical guide 28 The 28b contact. After this, the most advanced and sophisticated Pt of terminal inserts in the equipped system 25 of plug, and both are electrically connected. In addition, when the most advanced and sophisticated Pt of terminal upwards pushed away with respect to remainder, cylindrical guide 28 was also by terminal Most advanced and sophisticated Pt upwards pushes away by sliding. Because the most advanced and sophisticated Pt of terminal has been installed in the cylindrical guide 28, It is by the slip of cylindrical guide 28 ligand 26 that leads. When cylindrical guide 28 upwards moves During the complete retracted position of moving arrival, the most advanced and sophisticated Pt of terminal inserts in the ligand 26 and therein and is electrically connected.

Sleeve pipe 30 is formed by elastic insulating material, and has from the side roughly inverted L-shaped.

Sleeve pipe 30 has glass part shell 31 and is used for fixing glass part Pg in its underpart. Sleeve pipe 300 also comprise for high-tension cable K draw path 34, it is from the ancon of sleeve pipe along its horizontal component Extend. In addition, the terminal shell 33 of HV Terminal member 21 is arranged on glass part shell 31 and draws Between the outbound path 34.

Above-mentioned glass part shell 31 can contain glass part Pg, such as the glass part of first embodiment The situation of shell 11 is the same.

Terminal shell 33 has consistent with the ancon of HV Terminal member 21 shape of roughly falling L. The position The plug that can contain HV Terminal member 21 in the equipped system shell 33a of the plug of ancon below is equipped System 25, and can contain the HV Terminal structure from the horizontally extending cable-connector system shell of ancon 33b The cable-connector system 22 of part 21. The internal diameter of the equipped system shell 33a of plug roughly with glass part The internal diameter of shell 31 is the same. HV Terminal member 21 is included in the terminal shell 33, thereby cylindrical Guide 28 can slip into and be between the equipped system shell 33a of plug and the glass part shell 31.

HV Terminal member 21 is contained in sleeve pipe 30 by the former is press-fit in the terminal shell 33 In.

Draw the path be configured to as first embodiment draw path 14, and can be used for extracting out equipped High-tension cable K in the HV Terminal member 21.

When the structure plug side-connector structure, HV Terminal member 21 at first is connected to high-tension cable K An end. Then the other end of high-tension cable K imports the sleeve pipe 30 from the lower end (second end) of sleeve pipe, and And in turn by glass part shell 31 and terminal shell 33, extract out from drawing path 34 again. Subsequently, The depths that HV Terminal member 21 inserts sleeve pipe 30, and fixing by terminal shell 33. Simultaneously, cylinder Shape guide 28 is to downward-extension, thereby cylindrical guide 28 is included in the glass part container 31.

The plug side-connector structure of high-tension cable K is installed with aforesaid way, and is connected to spark plug then On the P.

Spark plug P is installed in the internal combustion engine. The glass part of the most advanced and sophisticated Pt of terminal and spark plug P subsequently Pg inserts the sleeve pipe 30 from sleeve pipe 30 belows. Then the most advanced and sophisticated Pt of terminal is inserted into and is placed on glass part In the cylindrical guide 28 in the shell 31. In this stage, glass part Pg is resisted against cylindrical leading On the bottom edge 28b of part 28. The most advanced and sophisticated Pt of terminal and glass part Pg are pushed into sleeve pipe 30 then The depths, thereby glass part Pg upwards promotes cylindrical guide 28. The latter is thus towards returning the position Put and move up. Then, because the most advanced and sophisticated Pt of terminal is included in the cylindrical guide 28, the former also leads Enter in the ligand 26. Finally, cylindrical guide 28 moves up and arrives complete retracted position and cloth Place terminal shell 33. Simultaneously, the most advanced and sophisticated Pt of terminal inserts in the cylindrical guide 28 and connects therein Connect. Attended operation between plug side-connector structure and the spark plug P is finished thus. In this structure, The risk that the most advanced and sophisticated Pt of terminal will hook less than the edge of opening with ligand 26, and the most advanced and sophisticated Pt of terminal In the equipped system 25 of the plug that smoothly inserts HV Terminal member 21.

When plug side-connector structure was equipped with in the spark plug P fully, cylindrical guide 28 was return And be arranged in the terminal shell 33. In this case, the inner ring surface of glass part shell 31 connects hermetically Receive on the outer ring surface of glass part Pg, thereby prevented that electric current is along the glass part surface leakage.

According to a first aspect of the invention, the plug side-connector structure of high-tension cable comprises sleeve pipe, this cover Pipe is for the substantial cylindrical shape of first and second ends, and is suitable for holding and is connected on high-tension cable one end The HV Terminal member, this high-tension cable stretches out by the first end of sleeve pipe. Sleeve pipe also be suitable for by Its second termination is received the most advanced and sophisticated and glass part subsequently of terminal of spark plug, thereby is connected to HV Terminal On the member.

In addition, the HV Terminal member comprises the cable-connector system that is connected on high-tension cable one end, with And the equipped system of plug. In addition, the equipped system of plug comprises having cylindrical shape and be suitable for holding terminal Most advanced and sophisticated ligand, and stretch out diametrically and form the conical guide member of horn-like end. This Outward, sleeve pipe comprises be used to the terminal shell that holds the HV Terminal member, and is suitable for holding glass part also Be positioned near the glass part shell of sleeve pipe second end. Then, the horn-like end of conical guide member Big external diameter is greater than the internal diameter of glass part shell, and in glass part shell and terminal shell comprise respectively Ring surface, its boundary line is provided with annular groove, thereby, when the HV Terminal member is contained in terminal shell When middle, conical guide member is equipped with in annular groove.

In this structure, when the terminal tip is inserted the sleeve pipe and is connected to HV Terminal from second end of sleeve pipe In the time of on the member, the terminal tip can smoothly import in the ligand by the conical guide member utmost point. In this operation In the process, prevented that effectively the edge of opening that the terminal tip is engaged body from hooking, and made it smoothly Be connected on the HV Terminal member.

In above-mentioned connector construction, the conical guide member of HV Terminal member is contained in the glass part shell And in the annular groove between the terminal shell. So the external diameter at the trumpet-shaped edge of conical guide member can With obvious internal diameter greater than the glass part shell. So, even the terminal tip is with respect to the HV Terminal member The very crooked insertion of central shaft, it still can be imported in the ligand admirably.

According to a second aspect of the invention, the improvement of the plug side-connector structure of high-tension cable is taper Guide comprises ring edge, the maximum outside diameter of this ring edge basically with the internal diameter of glass part shell Identical, thereby, when the HV Terminal member is contained in the terminal shell, be connected to annular lip seals On the inner ring surface of glass part shell.

When the terminal tip is inserted the sleeve pipe and is equipped with in the HV Terminal member from second end of sleeve pipe The time, it can with under the danger that the ligand edge of opening hooks not import and cooperating by conical guide member In the body. The terminal tip thus utmost point smoothly is equipped with in the HV Terminal member.

According to a third aspect of the invention we, ligand cylindrical has given external diameter and longitudinal extension Surface line. In addition, the horn-like end of conical guide member has maximum outside diameter, and with respect to ligand The outside cone angle determined of longitudinal extension surface line, thereby the maximum outside diameter of conical guide member is approximately greater than cooperation About 1.4 to about 1.6 times of body diameter, and the outside cone angle of conical guide member about 120 ° to approximately Between 150 °.

In this case, the terminal tip can smoothly be inserted in the HV Terminal member by the utmost point, and the latter can To be installed in the sleeve pipe easy as can. Can also avoid the cover that causes owing to the HV Terminal member that lengthens The pipe rigidity descends.

According to a forth aspect of the invention, conical guide member by a plurality of peripheral directions in conical guide member that The blade at this interval consists of.

These blades can by simply with sheet material a part of fluting separately and inclined slot separate Blade and making, thus each blade can keep required thickness and mechanical strength. These blades also very easily Produce.

According to a fifth aspect of the invention, the plug side-connector structure of high-tension cable comprises: sleeve pipe, and should Sleeve pipe is the substantial cylindrical shape with first and second ends, and is suitable for holding and is connected to high-voltage cable end On the HV Terminal member, this high-tension cable stretches out by the first end of sleeve pipe, sleeve pipe also is suitable for leading to Cross its second termination and receive the most advanced and sophisticated and glass part subsequently of terminal of spark plug, thereby make it be connected to height On the sub-member of pressure side. In addition, the HV Terminal member comprises that the cable that is connected on high-tension cable one end connects Device system and plug are equipped with system.

Then, the equipped system of plug comprises having cylindrical shape and be suitable for holding terminal tip and cylindrical The ligand of guide, terminal tip and cylindrical guide have respectively common cylinder axis, and be cylindrical Guide is equipped round ligand, thereby the former can stretch out along common cylinder axis with respect to the latter Or return.

In addition, sleeve pipe comprises be used to the terminal shell that holds the HV Terminal member, and is suitable for holding glass Part also is positioned near the glass part shell of sleeve pipe the second end.

Cylindrical guide can extend from ligand, thereby is contained in the glass part shell, and can move back Return, thereby in the most advanced and sophisticated and glass part insertion sleeve pipe time, cylindrical guide can be by glass when terminal Part advances in the sleeve pipe, and the terminal tip can import in the ligand, and the HV Terminal member is fixed thus In terminal shell.

In this structure, when the terminal tip is inserted in the sleeve pipe and is fitted in the HV Terminal member, end Son is most advanced and sophisticated to be cooperated can not being engaged to import in the situation that the body edge of opening hooks by cylindrical guide In the body. This terminal tip can smoothly fit in the HV Terminal member thus.

Claims

1. one kind is used for high-tension cable, (K) plug side-connector structure, comprise sleeve pipe, (10), this sleeve pipe, (10) be substantial cylindrical shape with first and second ends, and comprise and be connected to high-tension cable, (K) the HV Terminal member on the end, (1), this high-tension cable passes through sleeve pipe, (10) first end stretches out, sleeve pipe, (10) also be suitable for receiving spark plug by its second termination, (P) terminal tip, (Pt) and glass part subsequently, (Pg), thereby terminal tip, (Pt) can fit in the HV Terminal member, it is characterized in that

Described sleeve pipe comprises the terminal shell (13) that is used to hold described HV Terminal member (1), and is suitable for holding glass or ceramic segment (Pg) and is positioned at sleeve pipe (10) second ends neighbouring glass or ceramic segment shell (11);

Described HV Terminal member (1) comprises the cable-connector system (2) that is connected to described high-tension cable (K) end, and the equipped system (5) of plug;

Described plug is equipped with that system (5) comprises cylinder form and is suitable for holding the ligand (6) at described terminal tip (Pt);

Plug is equipped with system (5) and also comprises guider, is used for described ligand (6) is advanced in terminal tip (Pt) guiding.

2. the plug side-connector structure of high-tension cable as claimed in claim 1 (K), it is characterized in that described guider comprises from described ligand (6) and extends and form horn-like end tapered guide (8) in the radially expansion of described ligand (6) towards described second end of described sleeve pipe;

The maximum outside diameter of the described horn-like end of described conical guide member (6) is greater than the internal diameter of described glass or ceramic segment shell (11); And

Described glass or ceramic segment shell (11) and described terminal shell (13) comprise inner ring surface respectively, be provided with annular groove (12) between the two, thereby, when described HV Terminal member (1) was contained in the described terminal shell (13), described conical guide member (8) was equipped with in the into described annular groove (12).

3. the plug side-connector structure of high-tension cable as claimed in claim 2 (K), it is characterized in that, the described cylinder form of described ligand (6) has given external diameter, thus the described maximum outside diameter of described conical guide member (8) greater than the described external diameter about 1.4 of described ligand (6) to about 1.6 times.

4. as the plug side-connector structure of claim 2 or 3 described high-tension cables (K), it is characterized in that, the described cylinder form of described ligand (6) has the surface line of longitudinal extension, and described conical guide member (8) has the outside cone angle of determining with respect to the described longitudinal extension surface line of described ligand (6) (θ), thereby outside cone angle (θ) scope of described conical guide member (8) is between about 120 ° to about 150 °.

5. as the plug side-connector structure of each described high-tension cable in the claim 2 to 4, it is characterized in that, described conical guide member (8C) is made of a plurality of blades separate on the peripheral direction of described conical guide member (8C) (8Ca), and comprises the narrow horn-like end that is equal to the described horn-like end with described maximum outside diameter.

The plug side-connector structure of 6 high-tension cables as claimed in claim 1, it is characterized in that described guider comprises the conical guide member (8B) of extending and form radially enlarging of described ligand (6) horn-like end from described ligand (6) towards described second end of described sleeve pipe;

Make peace the greatly internal diameter of described glass or ceramic segment shell (11B) of the maximum outside diameter of described horn-like end equates, thereby, when described HV Terminal member (1B) is contained in the described terminal shell (13B), be connected to described annular lip seals on the described inner ring surface of described glass or ceramic segment shell (11B).

7. the plug side-connector structure of high-tension cable as claimed in claim 1, it is characterized in that, described guider comprises cylindrical guide (28), described cylindrical guide and described ligand (26) have common cylinder axis, and described cylindrical guide (28) is equipped round described ligand (26);

Described cylindrical guide (28) can stretch out along described common cylinder axis from described ligand (26), thereby be contained in described glass or the ceramic segment shell (31), and can return, thereby, when described terminal tip (Pt) and glass or ceramic segment (Pg) insert in the described sleeve pipe (30), described cylindrical guide (28) can be advanced in the described sleeve pipe (30) by described glass or ceramic segment (Pg), and described terminal tip (Pt) can be imported in the described ligand (26), and described thus HV Terminal member (21) is fixed in the described terminal shell (33).